They're known as "collaborators of justice" and Italy has the largest number of them in the world: criminals who choose to come forward, confess their crimes and then work together with police and prosecutors in exchange for protection and even compensation from the state. Originally developed to tackle terrorism, they've become a crucial legal tool in the fight against organised crime. Our reporters weigh up some of the pros and cons of the system.<br /><br />Visit our website:<br />http://www.france24.com<br /><br />Like us on Facebook:<br />https://www.facebook.com/FRANCE24.English<br /><br />Follow us on Twitter:<br />https://twitter.com/France24_en
